Kenneth mckenzie



(No Model.) 2 Sheets-Sheet '1.

K. .MoKENZIB. FIRE PLACE;

No. 437,615. Patented sel t. so, 1890.

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fig: I Q gaZ/iiaa iii? 1 1 1 (No Model.) 2 Sheets-Sheet 2.

K. McKENZIE.

FIRE PLACE.

.No. 437,615. Patented Sept. 30. 1890. y

UNITED STATES PATENT OFFICE.

KENNETH MCKENZIE, OF EDINBURGH, SCOTLAND, ASSIGNOR TO GILBERT ROBERT ANDERSON, OF SAME PLACE.

FIRE-PLACE.

SPECIFICATION forming part of Letters Patent No. 437,615, dated September 30, 1890.

Application filed June 28, 1890- Serial No. 357,135.

To all whom it may concern.-

Be it known that I, KENNETH MCKENZIE, mason, of 38 Frederick Street, Edinburgh, in the county of Mid-Lothian, North Britain, have invented Improvements in the Flues of Domestic Fire-Places, of which the following is a specification. r

My invention, which relates to improvementsin the fiues of domestic fire-places, has for its object the constructing of such fines in such a manner as to prevent back-smoke, back-draft, or blow-downs.

My invention consists of a cast or other metal flue or channel tapered so that it is narrower at the top than at the bottom. The lower sides of this flue or channel are partly closed by two metal platesone at each side-- and placed at an upward angle. Between the sides of this flue there is also a diamondshaped piece of metal, which forms a con nection between the back and front thereof. This diamond-shaped piece of metal is so placed that its lower point is at or about the same level as the top of the metal plates before mentioned. At or near the top of this flue or channel there is another diamondshaped piece of metal placed or fixed in the same manner or in a somewhat similar manner as the diamond-shaped piece of metal just mentioned. This flue or channel is also provided with a damper to regulate the draft. The bottom of the chimney is almost entirelyclosed in, and access is had to it through a sweeps damper. The sweeps damper would remain open to the extent of an inch or thereby for the purpose of ventilating the room. The said flue or channel may also be made of brick or fire-clay.

In the drawings, Figure 1 is a front elevation showing my improvements. Fig. 2 is a vertical section of the same, while Fig. 3 is a transverse section. ,Fig. 4 shows my improve ments as applied to an ordinary room-grate.

(No model.)

A is the tube or channel. B B are the metal plates. 0. is the diamond-shaped piece of metal. D is the damper, and E is the diamond-shaped piece of metal at the top of the tube or channel.

In carrying my invention into practice I build this tube or channel A into the back of the fire-place so thatthe lower end lies about five inches or so above, though not directly over, the top rib of the grate, as shown in Fig.

4. As the smoke leaves the fire it passes up the tube or channel A, through the spaces a a, and 5 5 between the metal plates B B and the diamond-shaped piece of metal 0 till it reaches the top, when it passes through the spaces 1) b, between the top of. the tube and the metal piece E, and then goes up the chimney, as shown at Fig. 2.

The damper D can be adjusted to regulate the draft, and in the case of a fire occurring in the chimney the damper could be closed, and thus shut off the access of any air to the chimney from below, and so assist in extinguishing the fire.

I claim The tube or channel A, metal plates B B, diamond-shaped pieces 0 and E, and damper D, as and for the purposes hereinbefore described, and shown on the accompanying sheet of drawings.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

KENNETH MCKENZIE.

Witnesses:

ANDREW VANNAN BEGG, Writer to the Signet, 14 Frederick Street, Ed-

inburgh.

ALEXANDER WILLIAM GORDON, Solicitor, N0. 122 George St, Edinburgh. 

